Add a 'no-db' mode

if info.x-go-orusapi-no-db is true, no database-related code is generated

templates/server/cmd.gotmpl

@@ -2,9 +2,10 @@
 
 {{ if .Copyright -}}// {{ comment .Copyright -}}{{ end }}
 
+{{- $noDB := not (not (index .Info.Extensions "x-go-orusapi-no-db") ) }}
 
 package cmd
 
 import (
 	"github.com/orus-io/go-flags"
 	"orus.io/orus-io/go-orusapi"
@@ -5,7 +6,8 @@
 
 package cmd
 
 import (
 	"github.com/orus-io/go-flags"
 	"orus.io/orus-io/go-orusapi"
+    {{- if not $noDB }}
 	"orus.io/orus-io/go-orusapi/database"
@@ -11,4 +13,5 @@
 	"orus.io/orus-io/go-orusapi/database"
+    {{- end }}
 )
 
 var (
@@ -27,4 +30,5 @@
 var (
 	Logger = orusapi.DefaultLogger(os.Stdout)
 	LoggingOptions  = orusapi.MustLoggingOptions(orusapi.NewLoggingOptions(&Logger, os.Stdout))
+    {{- if not $noDB }}
 	DatabaseOptions = &database.Options{}
@@ -30,4 +34,5 @@
 	DatabaseOptions = &database.Options{}
+    {{- end }}
 	ConfigFileOption = &ConfigFile{}
     InfoOptions = &Info{}
 
@@ -90,9 +95,10 @@
 	g.Namespace="log"
 	g.EnvNamespace="LOG"
 
+    {{- if not $noDB }}
 	g, err = parser.AddGroup("Database", "Database options", DatabaseOptions)
 	if err != nil {
 		panic(err)
 	}
 	g.Namespace="db"
 	g.EnvNamespace="DB"
@@ -93,9 +99,10 @@
 	g, err = parser.AddGroup("Database", "Database options", DatabaseOptions)
 	if err != nil {
 		panic(err)
 	}
 	g.Namespace="db"
 	g.EnvNamespace="DB"
+    {{- end }}
 
 	g, err = parser.AddGroup("Sentry", "Sentry options", SentryOptions)
 	if err != nil {

templates/server/cmdMigrate.gotmpl

@@ -2,6 +2,7 @@
 
 {{ if .Copyright -}}// {{ comment .Copyright -}}{{ end }}
 
+{{- $noDB := not (not (index .Info.Extensions "x-go-orusapi-no-db") ) }}
 
 package cmd
 
@@ -5,6 +6,10 @@
 
 package cmd
 
+{{- if $noDB }}
+// "info.x-go-orusapi-no-db" is 'true', no 'migrate' command
+{{- else }}
+
 import (
 	"github.com/golang-migrate/migrate/v4"
 	"github.com/rs/zerolog"
@@ -70,3 +75,4 @@
 		Logger.Fatal().Msg(err.Error())
 	}
 }
+{{- end }}

templates/server/cmdServe.gotmpl

@@ -2,6 +2,7 @@
 
 {{ if .Copyright -}}// {{ comment .Copyright -}}{{ end }}
 
+{{- $noDB := not (not (index .Info.Extensions "x-go-orusapi-no-db") ) }}
 
 package cmd
 
@@ -12,7 +13,9 @@
 	flags "github.com/orus-io/go-flags"
 	"github.com/prometheus/client_golang/prometheus"
 	orusapi "orus.io/orus-io/go-orusapi"
-	"orus.io/orus-io/go-orusapi/database"
+	{{- if not $noDB }}
+    "orus.io/orus-io/go-orusapi/database"
+    {{- end }}
 	"{{ joinFilePath .TargetImportPath "restapi" "operations" }}"
 )
 
@@ -37,4 +40,5 @@
 type ServeCmd struct {
 	Server *orusapi.Server
 
+	{{- if not $noDB }}
 	AutoMigrate bool `long:"auto-migrate" description:"automatically apply database migrations if needed"`
@@ -40,7 +44,8 @@
 	AutoMigrate bool `long:"auto-migrate" description:"automatically apply database migrations if needed"`
+    {{- end }}
 
 	API     *operations.{{ pascalize .Name }}API `no-flag:"t"`
 }
 
 // Execute setup a server and runs it
 func (cmd *ServeCmd) Execute([]string) error {
@@ -41,9 +46,10 @@
 
 	API     *operations.{{ pascalize .Name }}API `no-flag:"t"`
 }
 
 // Execute setup a server and runs it
 func (cmd *ServeCmd) Execute([]string) error {
+	{{- if not $noDB }}
 	if cmd.AutoMigrate {
 		if err := database.AutoMigrate(DatabaseOptions.DSN, migration.Source, Logger); err != nil {
 			return err
@@ -67,6 +73,7 @@
 	if err := db.Ping(); err != nil {
 		return err
 	}
+    {{- end}}
 
 	if cmd.Server.Prometheus {
 		var infoGauge = prometheus.NewGauge(prometheus.GaugeOpts{
@@ -83,8 +90,9 @@
 		}
 		defer prometheus.Unregister(infoGauge)
 
+        {{- if not $noDB }}
 		collector := sqlstats.NewStatsCollector("db", db)
 		if err := prometheus.Register(collector); err != nil {
 			return err
 		}
 		defer prometheus.Unregister(collector)
@@ -86,9 +94,10 @@
 		collector := sqlstats.NewStatsCollector("db", db)
 		if err := prometheus.Register(collector); err != nil {
 			return err
 		}
 		defer prometheus.Unregister(collector)
+        {{- end }}
 	}
 
 	config := restapi.Config{
 		Log: Logger,
@@ -91,5 +100,6 @@
 	}
 
 	config := restapi.Config{
 		Log: Logger,
+        {{- if not $noDB }}
 		DB: db,
@@ -95,4 +105,5 @@
 		DB: db,
+        {{- end }}
 	}
 	if err := setupServeConfig(&config); err != nil {
 		return err

templates/server/configureapi.gotmpl

@@ -2,6 +2,7 @@
 
 {{ if .Copyright -}}// {{ comment .Copyright -}}{{ end }}
 
+{{- $noDB := not (not (index .Info.Extensions "x-go-orusapi-no-db") ) }}
 
 package {{ .APIPackage }}
 
@@ -28,4 +29,6 @@
 // Config holds the things required to configure the API
 type Config struct {
 	Log zerolog.Logger
+
+{{- if not $noDB }}
 	DB *sqlx.DB
@@ -31,4 +34,5 @@
 	DB *sqlx.DB
+{{- end }}
 
 	BaseURL string
 	Shutdown []Callback

templates/server/migration.gotmpl

@@ -2,6 +2,7 @@
 
 {{ if .Copyright -}}// {{ comment .Copyright -}}{{ end }}
 
+{{- $noDB := not (not (index .Info.Extensions "x-go-orusapi-no-db") ) }}
 
 package migration
 
@@ -5,6 +6,12 @@
 
 package migration
 
+{{- if $noDB }}
+// "info.x-go-orusapi-no-db" is 'true', no actual 'migration' module
+// The directory and this file remains because there is no way to skip a file
+// generation based on a condition in the specs (that I know of)
+{{- else }}
+
 import (
 	"github.com/golang-migrate/migrate/v4/source"
 	bindata "github.com/golang-migrate/migrate/v4/source/go_bindata"
@@ -23,3 +30,4 @@
 }
 
 var Source = initSource()
+{{- end }}